Ring Central through Zapier

"Queued" mean RingCentral has received your request and your message will be sent later.

"Queued" will change to "Sent"/"Delivered" if everything goes well. If the message is never received, you need to check the message status.  You can make API call to "/restapi/v1.0/account/~/extension/~/message-store" to get a list of messages together with their status.